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2003 Ford focus idles high in park but fairly smooth. however when i put it in gear it lopes up andd down as if the t.p.s.is bad. the code i got was b1318 any tips

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Could be a lot of things from clogged injectors, fuel pump, fuel filter, throttle body dirty....... quite a few things.

I'd started with two of the most simple things first.

Get a can of carb cleaner and locate to throttle body, remove the intake hose exposing the inside of it. You should see a round or oval disk that moves when you press the gas pedal. you can rotate this by turning the throttle linkage by hand. using the cleaner and the straw that came with it spray all the exposed inside surfaces. then taking a rag with your hand spray some of the cleaner on it and with a finger and the rag wipe the areas down allowing the rag to pick up the carbon, dirt and other stuff.

Once you do this start the engine and while its running slowly rev up the engine (not too far) and spray a small amount int the throttle body onto the throttle plate and other inside parts. If you spray too much the engine will want to die, just give it a little more gas to keep it running .

Once you do this reassemble everything. Oh yea is the air cleaner new? If not replace it!

The other thing you can do is get some gas additive made to clean the fuel injection system. Talk to the guy at the parts store and ask what he thinks is the best stuff for the job. You can also do a search on the web for the best stuff to use.

Hope this helps.
Mike K.

Posted on May 10, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2003 subaru outback engine vibration in gear

Did you recently replace the axles on the vehicle? This problem commonly occurs in Subarus when you replace the axles with non-OEM parts. The only fix seems to be to swap out the axles for OEM parts. Search the forums at subaruoutback.org for many stories of the same condition and some theories on why non-OEM axles cause the problem.

Posted on Jan 06, 2009

  • 6 Answers

SOURCE: Idles bad

Sounds like you may have an upper intake manifold leak. Typically the gasket between the Plenum and the lower intake dries up and gets sucked into the intake a little causing a leak and a high idle issue. The repair requires the removal of the plenum and replacement of the gasket. NOTE: there is a torx bolt hidden between the center plenum runners and can only be seen by looking straight down at the top of the plenum and it may be covered in dirt. If you have to use a bar to pry off the plenum you probably have missed a bolt. Typically it is the one noted above. Best of luck.

Posted on Mar 22, 2009

pippall
  • 1486 Answers

SOURCE: rough idle 2003 f150

plugs or wires need replacing.

Posted on Jun 07, 2009

alicantecoli
  • 22095 Answers

SOURCE: focus 1.4 zetec idle tickover is about 2000rpm

sensor problem,without the right equipment it will be cheaper to put it in the dealers

Posted on Jul 09, 2009

  • 636 Answers

SOURCE: 1987 ford ranger idled too high

Try lubricating the throttle body cable , sounds like it is sticking.

Posted on Jul 26, 2009

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